Machine for providing laminated fibrous structures with offset edges



June 7, 1932. H. A. cUMFER f 1,862,256 MACHINE FOR PROVIDINGLAM1NATEDFIEROUS STRUCTURES WITH OFFSET EDGEs Filed March 12, 1930 21 E0 29 50 2zZ0 n-R |111 n n/ n n 2727/272 '(071' v Harry/ zizfe?? 50, thanthe rstcutting roll. The board in pass Patented June 7, 1932 T iOI-I-icli4 f ii j HARRY A. CUMIER, OF GIFIIICAGO,V ILLINOIS,`ASSIGNOR.OF ONE-HALF` T0WILLARD' fil'.k l MASON, OF GREENWICH, CONNECTICUT l MACHINE ronPROVIDING LAMINATED, FIBRoUs sTRUcTuREs WITH orrsnrnnens Applicationfiled March 12, 1930. -Seral No. 435,103.

This invention relates to improvements in a machine for cutting andsevering laminated board,'and refers particularly to a machine designedfor transversely cutting and severing a continuously moving laminatedstructure to form transverse overlapping edges thereon.

Inthe use of a laminated fibrous structure for building board, plasterreceiving` board or the like, wherein units of board are laid to form awall or ceiling or are used as a plaster receiving base for a wall orceiling, difiiculty is often experienced in properly joiningthe variousunits tov adjacent umts to form a smooth wall. This is particularly truein the event that plaster is to c oVerthe boards, because of the factthat there is .no interlocking means between adjacent units7 inasmuch asthe endsof said adjacentunits abut eachother, but do not overlap.vHence, if one unit were laterally displaced with respect 'to anadjacent unit the plaster would tend to crack at the juncture ofsaidunits.

Accordingly, one of the important features of my invention comprisesmeans for cutting and severing a laminated fibrous board in such amanner astoprovide a board having transversely offset, overlappingedges. Thus, a board maybe produced which may be laid to form a wall orceiling, the edges of vadjacent units comprising said wall Aorceilingoverlapping at their junctures, forming a socalled shiplaph Y Theinventionbriefly described comprises a` pair of cutting units, eachunitcomprising a cuttingroll and a cooperating bed roll. Each cuttingroll may have a knife or plurality of knives mounted upon its periphery,the 'circumferential distance between adjacent knives determining VtheVlength of the board. The laminated board to lbe cut may be fed to thefirst cutting.unit,`the blade of the cutting roll beingso adjusted thatonly the upper lamin are severed. The board mayl then be passed to asecond unit of similar construction to the iirst'cutting unit, exceptthat the cutting roll is mounted upon the opposite or undersde'of theboard and that the cutting roll may be of larger diameter ing'throughthesecond unit may then be cut from the bottom, the knives beingadjusted so'thatV the remaining laminas not cut by the first roll will`be cut by the second. "The angular position of the knives upon the twoVrolls may be adjusted relative to each otherso that I the cuts producedby the frespective" knives will be :offset relative to each other. Bythe Y y provision of a second cutting roll of larger diameter than thefirst, withpth'e same an'gu? laror rotative speed, the second cuttingroll will have a greater peripheral speed. j Hence, in making the secondcut, the knifewillnot only cut the lower laminas but will also splitsaid laminae in a plane parallel to. the" plane of the board and fromthesecond to the first cut, thereby forming an overlapping edge. It isto be understood, of course, that both cutting rolls may be constructedto form one unit, in which case each cutting'rollv will serve both as acutting rollandraas a bed roll.

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,"Other and further important features of f my invention will beapparent from the iaccompanying drawing and following detaildescription. l" K In the drawing, Fig. lis an elevational viewillustrating particularlymy novel cutting units. l j

` Figs. 2, 3 and 4 illustrate sequential phases in the cuttingoperation, Fig; Qshowing the initial cut, Fig. ,31 the secondary cut andFig.

4' the splitting actionv ofl the' secondary cutting knife.

- fFig. 5 is asectional view of 'boardcut by my device.` y -A YReferring more in detailtov theid'rawin'g, lindicates the rear ofya,'conventional con-v veyo'r,'comprising'a` belt 2' which travels overpulley 3 supported by a frame 4. Amachine (not shown) Yfor continuouslyand adhesive'- ly'uniting a plurality of individual Asheets ofiibrousmaterialv to `produce a laminated fibrous structure 5 may be positionedadjacent the forward end of thel'conveyor l. Said machine, if'desired,may produce 'a corrugated upper sheet V6 upon the'laminated base sheet.The board issuing from said machine 'passes tothe conveyor belt 2` andis transported thereby afsuitabl'e distance to permitthefadhesive'whichunites the indiV vidual laminae to set; Upon passing fromcutting uni-tsV8 and 9.

adjacent the end of the conveyork 1.

the conveyor belt 2 the board 5 may continue to move over a platform 7disposed said platform may be adapted to support the board in its travelfrom the conveyor to The cutting unit 8 may comprise a frame 10consisting of two vertical guide portions 11 between* whichjbearingblocks :12 .may be slidably positioned.VV Transverse shafts 13 Vand'14,upper and lower shafts, respectively, 1nay-be-journalled at eachendinthe slidable blocks 12. The upper shaft 13 may sup.- port a cuttingrolllll" upon the 'periphery of which .may be mounted one or morelongitudinally positioned cutting blades 15, the cutting .blades beingremovably fastened. by means of screws or the like 16'. 'A bed'roll 17may be 41nounted`upon the lower shaft llrandVV may be provided with oneor more Vlongitudinally Y positioned supportingV segments'1i3. `Thenumber and angular position of se 'men-ts 18 upon the roll 17 maycorrespon .to the number and angular. position ofaknives disposed uponthe surfaceof the roll 14. L

` 4VThe boardj may ipass from Vthe supporting platform?? to a positionintermediate the cutting roll 14"; and bed roll 17 Vwherein one 'A of:the'lni'ives 15 cuts into the .uppersurface of saidlaminated board. Thecutting/action ofthe knife 15 is shown-bestat .19 in F ig. 2. By"suitablyfpositioning the shaft 13 with respect/tothe' shaft A 14 thedepth of the cut 19' may be accurately regulated. This' ad.-

,justment maybe readily accomplished by` .manipulating an operatingscrew 20 threadedly `-positioned in-cross member 21 at the head of frame10. The screw 20 may be Vturned by a hand wheel or the like (not shown).VHence, it can beseen that, by suitably adjusting therelative"positionsl of the shafts 13o-and 14 with respect to each other,Vthecut )r9-may depth into the laminated board 5.

Tlie board y5y may ypass from unitV 8 to secondary cutting unit 9.ACutting unit 9,may be similar in construction to unit 8, withtheexception that the cutting roll 22 may be positioned on the: oppositeside of -the'board fjtoeutti-ngfroll14', andfsimilarly, bed roll 23maybe positioned upon the oppositelside thereof, producinga V cut 25.

adjust-ment'lof,Y the roll 14 with .respectto' `off-'the board to the'.bed. roll 1 7 .V The knives 24'cut the board `5 from the lower surfacethereof upwardly/to an intermediate laminae The angular ithe',roll,22may,besuchl that the cuts19 `and y25 willbe ofl'setwithrespect to each other an'd fthe depth of the cuts 19- and 25 maybe'suchfthatt-hey both terminate ina common intermediate lamina. v

a' feature lof'my invention;the. second-'lfXsUFfiH-gr011-22.mayzbeefeliehlrlerger The e produced to any desiredf v'ac'terdescribed.. Y ,t Y. .l

I amfaware thatmanychangesmayhe made f without departing fromlthespirit; :03E`Y` the. nl

diameter than-the primary cutting roll 14', and inasmuch as the rolls14', 17, 22 and 23 may all have the same angular velocity, theperipheral speed of the roll 22 will be in excess of the peripheralspeeds of the re.

maining rolls and will also be greater than the speed of translation ofl the board -5. Hence, relative motionY may exist between Vthe'vperiphery of the cutting roll 22 and the vperiph'eries "of, theremaining rolls, and consequently @relat1ve .motion may exist betweenthe periphery of the roll 22 and the board 5.

i Therefore, vit can be readily seen that immeis perfectly dry and Ahassufficiently set, `poor cuts at 19 and 25 may result. o obviaite thiscondition a shaft .27 journalled upon the frame 10 may support a roll 28ofsoft. pliable material suchas felt for the like. 'The roll., 28 maybemoistened by water or other suitable liquidwhich may dripthereon froma pipe 29, controlled yby valve 30. VI-he.xlrnivfes 15 theirrotation'contactthe' pliable roll 28 and embed themselves therein,thereby completely' coating .the knifesurface with .the

liquid with which saidroll 2'8..is saturated. The V`periphery .oftheroll 22 .may pass throug'hfa trough 31which may contain a v llos'sufficient quantity .ofliquid to wet `and .wash the' knives 24 or, ifdesired, anotherroll v(not shown) similar tothe roll28niayfbedisposed-,adjacent thek roll 22 iandmay function in amanners'imila'r to thel roll f285y A Although I 'have shown a devicewherein the rster primary cutis producedfrom above and thelsecondarycut:and severing laction is produced from below,fit. is to=beunderstood that thisoperation may beperformedin -the inverse orden-thatis, theprimarycu-t .may

be produced )from [below and the secondary l. jV i "Itis apparent `'that'hereinis .provideda device for cuttinga laminatedboard to formaunitary' laminated :structurehaving ;ofSet pr overlapping transverseedges. The device 1s .extremely lsim-ple. to operate, and vin )additionisfeicien-'t andideally adap;tedfor-the 1economical cutting .ofoifetledgesof the char.` L

ventiong, forinstanca-the form of: theknives "cut and-lateralthrustmaybeproduced Vfrom Y may PQL-,Cheneedfa their-relativerlecementfm 'with respect to each other may be altered; the depths of the cutsmay be varied and the Width of the offsets may be changed, all of whichin addition to many other changes in construction and operation arecontemplated by my invention.

While I have illustrated the fibrous structure as taking the form of amulti-ply base sheet and a corrugated upper ply, it is to be understoodthat the machine is not limited to use with a board having a corrugatedupper ply. The machine is designed for use in the cutting and severingof any kind of a multi-ply or laminated fibrous structure to produceoff-set edges.

I claim as my invention l. A mechanism for cutting and severing acontinuously moving laminated fibrous structure to produce oppositelydisposed ofi'- set edges thereon, comprising in combination means forfeeding a continuous laminated strip, rotary cutting means acting onsaid laminated strip to cut from spaced points on both surfaces of saidstrip to a common intermediate lamina, and means for driving one of saidcutting means at a peripheral speed in excess of the linear feed of thestrip for splitting said intermediate lamina from one cut to the othercut and thus completely severing a unit from said continuous strip.

2. A mechanism for cutting and severing a continuous laminated fibrousstrip to produce off-set edges on said severed units, comprising incombination, means for feeding a continuous laminated strip, rotarycutting means acting ony said strip to cut thereinto from both surfacesof said strip to a common lamina, said cutting means being relativelydisposed to slightly olf-set one cut from the other, and means fordriving one of said cutting means at a peripheral speed in excess of thelinear feed of the strip Jfor splitting said common intermediate laminafrom one cut to the other and thus completely severing individual unitsfrom said continuous stri 3.p A mechanism for cutting laminated fibrousstructures to produce oppositely disposed off-set edges thereon,comprising a primary cutting element for cutting a plurality of thelaminae from one side to an intermediate lamina, a secondary rotarycutting element for cutting the remaining lamin from the opposite sideof said laminated structure to the same intermediate lamina, and meansfor driving said secondary cutting element at a peripherial speed inexcess of the linear feed of the strip for splitting said intermediatelamina from the second cut to the rst cut to thereby completely sever anindividual unit from -said strip.

4. A mechanism for cutting laminated fibrous structures to produceoppositely disposed ofiset edges thereon comprising a primary cuttingelement for cutting a plurality ting said intermediate lamina from thesecond cutl to the first cut to thereby completely sever an individualyunit from said strip.

5. A mechanism for cutting laminated fibrous structures to produceoppositely disposed ofi-set edges thereon, comprising a prmary cuttingroll for cutting a plurality'of the laminae from one side of saidlaminated structure to an intermediate lamina, a 'secondary cutting rollof larger diameterl than the primary roll for cutting the remaining vlaminae from the opposite side of said structure to the saidintermediate lamina, and means for synchronizing the angular motion ofboth of said cutting rolls and thereby splitting said intermediatelamina from the second cut to the first cut.

6. A mechanism for cutting laminated fibrous structures to produceoppositely disposed off-set edges thereon, comprising a primary cuttingroll for cutting a plurality of the laminae `from one side of saidstructure to an intermediate lamina, and a synchronously rotatingsecondary cutting roll of larger diameter for cutting the remaininglaminae from the opposite side of said structure to the sameintermediate lamina to thereby split said intermediate lamina romthesecond cut to the first cut and completelysever an individual unit fromsaid structure.

7. A device for cutting units from a continuously advancing laminatedstrip and proy ducing oH-set cut edges thereon, comprising incombination, a primary cutting roll for cutting a'plurality of thelaminae from one side of said strip to an intermediate lamina, asecondary cutting roll of relatively larger diameter for cutting theremaining laminae from the opposite side of said strip to the sameintermediate lamina rotating in timed relationship With the primarycutter,- and thereby maintaining the peripheral speed of the secondarycutting roll in excess of the speed of translation of the moving strip.

In testimonyvvhereof I affix my signature.4

HARRY A. CUMFER.

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